--- title: "BYD NLBK-30-485W 485W Solar Panel - Specs & Review | ComparePV" description: "BYD NLBK-30-485W 485W solar panel. Specs: 22.42% efficiency, Monocrystalline cells, dimensions, warranty and temperature coefficient." source: "https://comparepv.com/panel/byd-nlbk-30-485w" updated: 2026-09-11 --- # BYD NLBK-30-485W Middle of its segment, weak in heat 1,089 panels in the segment TOPCon 450-500 W ## Identity - **Manufacturer:** BYD - **Model:** NLBK-30-485W - **Series:** AURON NLBK-30 (470-490W) - **Rated power:** 485 W - **Cell technology:** TOPCon - **Bifacial:** yes ## How it compares Compared against segment TOPCon 450-500 W (1089 panels). | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Power (Wp) | 485 W | 465 W | Strong - top 20% | | | Module efficiency | 22.42% | 22.52% | Typical | 4,763 | | Power density | 224.2 | 225.2 | Typical | 4,763 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight (kg) | 25.2 kg | 24.0 kg | Typical | | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Full peer table | Measure | This panel | Segment median | Standing | Rank | | --- | --- | --- | --- | --- | | Module efficiency | 22.42% | 22.52% | Typical | 4,763 | | Power density | 224.2 | 225.2 | Typical | 4,763 | | Temperature coefficient | -0.300 | -0.290 | Weak - bottom 20% | 6,093 | | Weight per kWp | 52.0 | 52.2 | Typical | 5,397 | | Performance warranty | 30 yrs | 30 yrs | Typical | 21 | ### Watch out for - **-0.300 %/°C temperature coefficient** - Bottom 20% of the TOPCon 450-500 W segment, against a median of -0.290. - **Best for:** Residential, commercial and shaded-installations. - **Not ideal for:** Hot climates. ## Specification ### Electrical - **Rated power (Pmax):** 485 W - **Efficiency:** 22.42 % - **Voltage at Pmax (Vmp):** 36.25 V - **Current at Pmax (Imp):** 13.38 A - **Open-circuit voltage (Voc):** 43.76 V - **Short-circuit current (Isc):** 13.93 A - **Max system voltage:** 1500 V ### Temperature - **Temperature coefficient of Pmax:** -0.300 %/degC - **Temperature coefficient of Voc:** -0.250 %/degC - **Temperature coefficient of Isc:** 0.046 %/degC - **NOCT:** 45 degC ### Cell and construction - **Cell type:** Monocrystalline - **Cell technology:** TOPCon - **Cell count:** 120 - **Bifacial:** yes ### Physical - **Length:** 1908 mm - **Width:** 1134 mm - **Thickness:** 30 mm - **Weight:** 25.2 kg - **Area:** 2.16 m2 - **Power density:** 224.2 Wp/m2 ### Warranty and degradation - **Product warranty:** 12 years - **Performance warranty:** 30 years - **Output guaranteed at end of warranty:** 87.4 % - **Annual degradation:** -0.40 % ## Rank in the whole catalogue | Measure | Position | | --- | --- | | Efficiency | 4763 of 14005 | | Power density | 4763 of 14005 | | Temperature coefficient | 6093 of 14005 | | Weight | 5397 of 14005 | | Warranty | 21 of 14005 | ## Pros - **N-type TOPCon with Zero LID Technology** - N-type TOPCon cells eliminate the Light-Induced Degradation (LID) effect at the start of operation, which is typical of P-type PERC modules. This translates into more stable power output during the initial months of operation and more predictable annual energy yields — a critical factor in financial modeling for both residential prosumer and commercial installations. - **30-Year Linear Power Output Warranty** - BYD offers a 30-year linear power output warranty for the AURO N series, while the market standard — including the Renesola RS4-470~490NX-E1 — typically stops at 25 years. The extended warranty horizon lengthens the bankability window of a project and can improve IRR metrics in debt-financing models. - **Module Efficiency up to 22.65% — Competitive Within the Segment** - The peak efficiency of 22.65% for the 490 Wp variant places the series on par with its direct competitors: the Renesola RS4-470~490NX-E1 achieves 22.71%, while the Horay Solar HS 182-120 TC Ocean reaches 22.6%. The gap relative to the segment leader (Renesola) is just 0.06 percentage points — negligible under real-world operating conditions. - **Bifacial Design with SMBB Technology** - The combination of a bifacial architecture (typical bifaciality factor for TOPCon: 80–85%) and multi-busbar SMBB technology reduces resistive losses and improves resilience to partial shading. Under Polish conditions (ground albedo approximately 0.2–0.3 in summer), the realistic rear-side energy gain ranges from 5–12%, depending on the surface type beneath the array. - **BNEF Tier-1 Manufacturer, Bankable Since 1995** - BYD appears on the BloombergNEF Tier-1 list, confirming full bankability for projects requiring bank financing. The manufacturer's financial stability and global service network — built since 1995 — reduce counterparty risk on long-term warranties, a material consideration over a 30-year investment horizon. ## Cons - **12-Year Product Warranty — Below Premium Standard** - The materials and workmanship warranty stands at 12 years, whereas premium manufacturers in the same power class (e.g., Solar-Fabrik) offer 15 years. For commercial installations financed through investment loans, the shorter product warranty period may require additional contractual protections from the installer. ## About this series The BYD AURO N NLBK-30 (470-490W) series of photovoltaic panels are bifacial modules based on N-type TOPCon cells, designed to achieve higher energy yields in Polish conditions, even when the weather is unfavorable. A key feature is **Zero LID**, meaning resistance to typical degradation at the start of operation, which facilitates predictable energy production over many years. In practice, this translates to a more stable return on investment and a lower risk of disappointment after installing the system. The use of **SMBB (multi-bin) connection technology** improves current collection and performance under partial shading, while **good performance in low-light conditions** supports energy generation on cloudy days and in foggy weather. The modules also have **high compatibility** with popular inverters and trackers, which simplifies system design. This is the ideal choice for homes, businesses, and larger systems where power density, environmental resistance, and lower energy costs throughout the system's lifespan are important. ## Notable figures - At 22.4% efficiency, this panel is on par with typical \*\*TOPCon 450-500W\*\* modules - Power density of 224.2 W/m² matches the \*\*TOPCon 450-500W\*\* median - Temperature coefficient of -0.30%/°C matches the \*\*TOPCon 450-500W\*\* median - Weight of 25.2 kg is 1.2 kg above \*\*TOPCon 450-500W\*\* median (24.0 kg) - verify structural support - Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface ## Questions ### What warranty coverage applies to the BYD AURON NLBK-30 series, and what does it include? The BYD AURON NLBK-30 series comes with a 12-year product warranty covering material and workmanship defects, along with a 30-year linear power output warranty. The linear power warranty means the manufacturer guarantees a defined minimum output level over three decades, with annual degradation kept below 0.4%. This is one of the longest and most precisely defined warranty packages available in the TOPCon module market. ### Do the BYD AURON NLBK-30 panels perform well in winter and on overcast days? Yes. N-type TOPCon cells feature a low temperature coefficient (approx. -0.30%/°C), which improves summer performance compared to older P-type modules. In the Polish climate, however, strong low-irradiance performance is equally important — the NLBK-30 series handles diffuse and weak sunlight better than previous-generation monocrystalline modules, translating to measurably higher annual energy yield under frequent cloud cover conditions. ### What is Zero LID in the BYD AURON NLBK-30 panels, and why does it matter? LID (Light Induced Degradation) is a phenomenon in which conventional P-type modules lose 1–3% of their rated power within the first hours of operation. The N-type TOPCon technology used in the NLBK-30 series virtually eliminates this effect — hence the Zero LID designation. In practice, this means the panel delivers output close to its nominal power rating from day one, with no initial power loss at commissioning, making ROI calculations more accurate and reliable. ### Are the BYD AURON NLBK-30 490W panels compatible with inverters commonly used in Poland? Yes. The AURON NLBK-30 series is engineered for broad compatibility with popular inverter brands, including SMA, Fronius, SolarEdge, Huawei, and Growatt, as well as standard MPPT trackers. The modules' standard electrical parameters and open-circuit voltage, which fall within typical inverter input ranges, mean that integration should present no difficulties and requires no special cabling or configuration. ### How do the BYD AURON NLBK-30 panels differ from older BYD models based on P-type technology? The key differences lie in cell technology and bifaciality. Older BYD modules were based on P-type PERC cells, whereas the NLBK-30 uses newer N-type TOPCon cells, which deliver higher conversion efficiency, lower annual degradation (below 0.4% versus up to 0.7% for PERC), and Zero LID performance. The bifacial design additionally captures albedo light reflected from the ground or mounting surface, boosting energy yield — especially on light-colored rooftops or ground-mounted systems with reflective substrates. ### Are the BYD AURON NLBK-30 panels suitable for pitched roof installations with partial shading? Yes. The SMBB (Super Multi-Busbar) technology used in these modules makes them less sensitive to partial shading from chimneys, antennas, or adjacent roof sections. Current from individual cells is collected across a greater number of conductive pathways, so shading of one section of the panel has a proportionally smaller impact on the output of the entire string. For rooftops with significant shading obstacles, complementing the installation with power optimizers or microinverters is also worth considering. ## Datasheet [Manufacturer datasheet (PDF)](https://comparepv.com/datasheets/byd-nlbk-30-2d9951ab8619.pdf) ## Alternatives | Panel | Power | How it differs | | --- | --- | --- | | [Longi Solar LR7-54HJD-510M](https://comparepv.com/panel/longi-lr7-54hjd-510m) | 510 W | +25 W, cooler, +2.6 pp | | [AIKO AIKO-A495-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a495-mce54mw) | 495 W | Cooler, lighter, +2.4 pp | | [Longi Solar LR7-54HJD-505M](https://comparepv.com/panel/longi-lr7-54hjd-505m) | 505 W | +20 W, cooler, +2.3 pp | | [AIKO AIKO-A490-MCE54Mw](https://comparepv.com/panel/aiko-aiko-a490-mce54mw) | 490 W | Cooler, lighter, +2.1 pp | | [Longi Solar LR7-54HJD-500M](https://comparepv.com/panel/longi-lr7-54hjd-500m) | 500 W | Cooler, lighter, +2.1 pp | | [Talesun CIPRO-TN9C54M-500W](https://comparepv.com/panel/talesun-cipro-tn9c54m-500w) | 500 W | Cooler, lighter, +2.1 pp | | [BYD NLBK-30-470W](https://comparepv.com/panel/byd-nlbk-30-470w) | 470 W | -15 W, -0.7 pp | | [BYD NLBK-30-475W](https://comparepv.com/panel/byd-nlbk-30-475w) | 475 W | -10 W, -0.5 pp | | [BYD NLBK-30-480W](https://comparepv.com/panel/byd-nlbk-30-480w) | 480 W | -0.2 pp | | [BYD NLBK-30-490W](https://comparepv.com/panel/byd-nlbk-30-490w) | 490 W | +0.2 pp | | [Longi Solar LR7-60HVH-560M](https://comparepv.com/panel/longi-lr7-60hvh-560m) | 560 W | +75 W, cooler, +2.4 pp | | [Longi Solar LR7-60HVH-555M](https://comparepv.com/panel/longi-lr7-60hvh-555m) | 555 W | +70 W, cooler, +2.2 pp | | [Longi Solar LR7-60HVHL-550M](https://comparepv.com/panel/longi-lr7-60hvhl-550m) | 550 W | +65 W, lighter, +2.0 pp | | [JA Solar JAT60S40-540/LR](https://comparepv.com/panel/ja-solar-jat60s40-540-lr) | 540 W | +55 W, cooler, +2.0 pp | | [Gokin GK-5-60HG-540M](https://comparepv.com/panel/gokin-gk-5-60hg-540m) | 540 W | +55 W, cooler, +2.0 pp | | [Jinko Solar JKM545-54QL6-DV-F1-EU](https://comparepv.com/panel/jinko-solar-jkm545-54ql6-dv-f1-eu) | 545 W | +60 W, cooler, +1.8 pp | --- Source: https://comparepv.com/panel/byd-nlbk-30-485w Not in this file, on the page: the I-V and temperature curves lifted from the manufacturer's datasheet, a thirty-year output simulator, a bifacial gain calculator and alternatives filtered by how closely they match these dimensions.